body, div, dl, dt, dd, ul, ol, li, h1, h2, h3, h4, h5, h6, input, button, textarea, p, blockquote, th, td, form {
    margin: 0;
    padding: 0;
}
a{
    text-decoration: none;
}
a:hover{
    text-decoration: none;
}
ol, ul {
    list-style: none;
}
#header{
    background: #fff;
    z-index: 2;
    box-shadow: 0 4px 8px 0 rgba(28,31,33,.1);
}
.course-detail-header {
    position: relative;
    padding-right: 24px;
    height: 60px;
}
.l {
    float: left;
}
.nv {
    float: left;
}
.nv-goback a {
    width: 70px;
    text-align: center;
}
.nv > a {
    display: block;
    height: 60px;
    line-height: 60px;
}
.nv-goback a span {
    font-size: 24px;
    color: #9199a1;
    line-height: 60px;
    transition: .3s all linear;
}
.nv-menu > a {
    padding-right: 24px;
    font-size: 14px;
    color: #b5b9bc;
    position: relative;
}
.chaptername em {
    font-size: 16px;
    color: #1c1f21;
    font-weight: 700;
}
.nv-follow-a {
    margin-right: 24px;
}
.follow-action {
    cursor: pointer;
}
.follow-action i {
    font-size: 20px;
    color: #b2b8bd;
    margin-right: 4px;
}
.follow-action i, .follow-action span {
    float: left;
    line-height: 60px;
    transition: .3s all linear;
}
.js-follow-action .ico{
    font-size: 20px;
    color: #b2b8bd;
    margin-right: 4px;
}
.follow-action span {
    font-size: 12px;
    color: #9199a1;
}
.follow-action i, .follow-action span {
    float: left;
    line-height: 60px;
    transition: .3s all linear;
}
#header #login-area {
    float: right;
    position: relative;
}
#header #login-area .logined > li {
    float: left;
    position: relative;
}
#header #login-area .shop-cart {
    margin: 12px 0;
}
#header #login-area .shop-cart {
    height: 36px;
    line-height: 36px;
    margin: 18px 0;
}
.shop-cart {
    position: relative;
}
#header #login-area .shop-cart .shop-cart-icon {
    display: inline-block;
    padding: 0 18px;
    width: auto;
    box-sizing: border-box;
    border: 1px solid rgba(255,255,255,.2);
    border-top-color: rgba(255, 255, 255, 0.2);
    border-right-color: rgba(255, 255, 255, 0.2);
    border-bottom-color: rgba(255, 255, 255, 0.2);
    border-left-color: rgba(255, 255, 255, 0.2);
    border-radius: 18px;
    height: 36px;
    line-height: 34px;
    color: #787d82;
    text-align: center;
}
#header #login-area .logined > li > a {
    height: 60px;
    line-height: 60px;
}
#header #login-area .logined > li > a {
    display: block;
    width: 60px;
    height: 72px;
    line-height: 72px;
    color: #787d82;
    text-align: center;
    -webkit-transition: background-color .2s;
    -moz-transition: background-color .2s;
    transition: background-color .2s;
}
.shop-cart .shop-cart-icon {
    border-color: #b2b8bd !important;
}
.shop-cart .shop-cart-icon .icon-shopping-cart, .shop-cart .shop-cart-icon .imv2-cart {
    position: relative;
    top: 2px;
    font-size: 16px;
    margin-right: 8px;
}
.shop-cart .shop-cart-icon span {
    color: #b2b8bd;
}
#header #login-area .logined > li > a {
    height: 60px;
    line-height: 60px;
}
#header #login-area .logined > li > a {
    display: block;
    width: 60px;
    height: 72px;
    line-height: 72px;
    color: #787d82;
    text-align: center;
    -webkit-transition: background-color .2s;
    -moz-transition: background-color .2s;
    transition: background-color .2s;
}
.logined > li #header-avator {
    height: 60px;
    line-height: 60px;
    width: 44px;
}
.set_btn img {
    border-radius: 50%;
    vertical-align: middle;
    display: inline-block;
    background: url(/static/img/menu_icon.png) no-repeat 0 0;
    border: 0;
}
.search-warp {
    float: right;
    margin: 12px 36px 12px 0;
}
.search-warp {
    position: relative;
    float: left;
    margin-left: 320px;
}
.search-warp .search-area {
    height: 36px;
    width: 360px !important;
    background: #f3f5f6;
    border-radius: 8px;
    box-sizing: border-box;
    padding-right: 56px;
    border: 1px solid #f3f5f6;
    margin: 0;
    transition: .3s all linear;
}
.search-area {
    float: right;
    position: relative;
    height: 46px;
    width: 260px;
    padding-right: 40px;
    border-bottom: 1px solid rgba(255,255,255,.4);
    zoom: 1;
    -webkit-transition: width .3s;
    -moz-transition: width .3s;
    transition: width .3s;
}
.remind_warp, .search-area {
    margin: 12px 0;
}
.search-warp .search-input {
    height: 34px;
    color: #1c1f21;
    padding-left: 16px;
    border-top-left-radius: 8px;
    border-bottom-left-radius: 8px;
}
.search-area .search-input {
    padding: 12px 0;
    padding-left: 15px;
    width: 100%;
    /*height: 46px;*/
    line-height: 22px;
    font-size: 12px;
    float: left;
    border: 0;
    -webkit-transition: background-color .3s;
    -moz-transition: background-color .3s;
    transition: background-color .3s;
    background-color: transparent;
    -moz-box-sizing: border-box;
    -webkit-box-sizing: border-box;
    -ms-box-sizing: border-box;
    box-sizing: border-box;
}
body, div, dl, dt, dd, ul, ol, li, h1, h2, h3, h4, h5, h6, input, button, textarea, p, blockquote, th, td, form {
    margin: 0;
    padding: 0;
}
a, button, input {
    outline: 0;
}
.search-warp .showhide-search {
    width: 56px;
    height: 36px;
    text-align: center;
    top: 0;
    right: 0;
    padding: 0;
    border-radius: inherit;
    border-top-right-radius: inherit;
    border-bottom-right-radius: inherit;
    border-top-right-radius: 8px;
    border-bottom-right-radius: 8px;
    transition: .3s all linear;
}
.search-warp .showhide-search {
    width: 100%;
    height: 24px;
    text-align: right;
    position: absolute;
    display: inline-block;
    right: 14px;
    bottom: 24px;
    padding: 10px 8px;
    border-radius: 18px;
}
.search-warp .showhide-search i {
    width: 100%;
    height: 36px;
    line-height: 36px;
    font-size: 24px;
    transition: .3s all linear;
}
.search-warp .showhide-search i {
    display: block;
    height: 24px;
    color: #757a7e;
    cursor: pointer;
    font-size: 20px;
    line-height: 24px;
    width: 20px;
}
#studyMain {
    position: relative;
    z-index: 1;
}
.video-con {
    position: relative;
    background-color: #000;
    width: 100%;
    /*top: -120px;*/
}
.course-layout {
    display: flex;
    display: -webkit-flex;
    position: relative;
    zindex: 1;
}
.section-list.active {
    left: 60px;
    opacity: 1;
}
.section-list {
    position: absolute;
    left: -400px;
    top: 0;
    bottom: 0;
    width: 400px;
    background: #26292c;
    box-shadow: 0 8px 16px 0 #1c1f21;
    z-index: 9999;
    transition: .3s all linear;
    opacity: 0;
    padding: 8px 0;
    box-sizing: border-box;
}
.nano {
    position: relative;
    width: 100%;
    height: 100%;
    overflow: hidden;
}
.nano > .nano-content {
    position: absolute;
    overflow: scroll;
    overflow-x: scroll;
    overflow-x: hidden;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
}
.section-list .nano-content {
    padding-bottom: 20px;
}
.section-list ul {
    padding: 0 24px;
}
.section-list .sec-title {
    padding-top: 20px;
    font-size: 14px;
    color: #fff;
    line-height: 22px;
    margin-bottom: 8px;
}
.section-list .sec-li {
    height: 30px;
}
.course-sidebar-layout {
    background: #1c1f21;
    width: 60px;
    display: flex;
    display: -webkit-flex;
    align-items: center;
    z-index: 10000;
}
.course-sidebar-layout dl {
    flex: 1;
    width: 100%;
}
.course-sidebar-layout dd {
    display: flex;
    display: -webkit-flex;
    height: 72px;
    flex-direction: column;
    text-align: center;
    justify-content: center;
    cursor: pointer;
    color: rgba(255,255,255,.4);
}
.course-sidebar-layout span {
    font-size: 12px;
    line-height: 18px;
}
.video-player{
    width: 800px;
    height: 500px;
    border: 1px solid red;
    margin: 0px auto;
}
#courseSidebar dd:hover{
    color: #fff;
    background: #26292c;
}
.active{
    left: 60px;
    opacity: 1;
}
.course-right-layout {
    position: relative;
    background: #1c1f21;
    width: 384px;
    padding: 0;
    right: 0;
    z-index: 1;
}
.course-right-layout .course-right-nano, .course-right-scroll .course-right-nano {
    position: relative;
    width: 100%;
    height: 100%;
    overflow: hidden;
    z-index: 2;
}
.course-right-layout .nano-right-content, .course-right-scroll .nano-right-content {
    position: absolute;
    overflow: scroll;
    overflow-x: scroll;
    overflow-x: hidden;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
}
.c-panel.current {
    display: block;
    z-index: 1;
}
.c-panel {
    position: absolute;
    top: 0;
    right: 0;
    left: 0;
    z-index: 0;
    min-height: 100%;
    display: none;
    box-sizing: border-box;
}
.video-panel {
    padding: 32px;
    background: #1c1f21;
}
.video-panel .video-panel-close {
    display: inline;
}
.video-panel .video-panel-close, .video-panel .video-panel-show {
    position: absolute;
    right: 24px;
    top: 16px;
    font-size: 24px;
    color: #93999f;
    line-height: 24px;
    cursor: pointer;
    z-index: 1;
}
.video-panel .v-teachers {
    margin-bottom: 16px;
}
.video-panel .v-teachers-img {
    float: left;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    overflow: hidden;
}
.video-panel .v-teachers-img img {
    width: 100%;
    height: 100%;
}
.video-panel .v-teachers dl {
    float: left;
    margin-left: 12px;
}
.video-panel .v-teachers dd.v-t-nickname, .video-panel .v-teachers dd.v-t-nickname a {
    font-size: 16px;
    color: #fff;
    line-height: 24px;
}
.video-panel .v-teachers dd {
    height: 24px;
}
.video-panel .v-teachers dd.v-t-nickname, .video-panel .v-teachers dd.v-t-nickname a {
    font-size: 16px;
    color: #fff;
    line-height: 24px;
}
.video-panel .v-teachers dd.v-t-title {
    font-size: 12px;
    color: rgba(255,255,255,.8);
    line-height: 18px;
}
.video-panel .v-teachers dd:last-child {
    height: 18px;
    margin-top: 2px;
}
.video-panel .v-teachers-info {
    font-size: 12px;
    color: rgba(255,255,255,.6);
    line-height: 22px;
}
.c-panel.current {
    display: block;
    z-index: 1;
}
.c-panel {
    position: absolute;
    top: 0;
    right: 0;
    left: 0;
    z-index: 0;
    min-height: 100%;
    display: none;
    box-sizing: border-box;
}
.c-panel .panel-close {

    position: absolute;
    right: 24px;
    top: 16px;
    font-size: 24px;
    color: #93999f;
    line-height: 24px;
    cursor: pointer;
    z-index: 1;
}
.c-panel .panel-t {
    background: #fff;
    box-shadow: 0 4px 8px 0 rgba(28,31,33,.1);
    padding: 16px 24px 24px;
}
.c-panel.note-panel h3, .c-panel.qa-panel h3 {
    font-size: 16px;
    color: #07111b;
    line-height: 24px;
    font-weight: 700;
    margin-bottom: 16px;
}
.putnote input, .putqa input {
    display: block;
    height: 36px;
    background: #fff;
    border: 1px solid #9199a1;
    border-radius: 6px;
    margin-top: 16px;
    width: 100%;
    padding: 0 12px;
    box-sizing: border-box;
}
.putnote .error-tip, .putqa .error-tip {
    height: 24px;
    margin: 0;
    background: 0 0;
    padding-left: 0;
    font-size: 12px;
    line-height: 24px;
    color: #f01414;
}
#qa-panel-editor{
    height: 200px;
    width: 310px;
    padding: 10px;
}
.putnote .putnote-submit, .putnote .putqa-submit, .putqa .putnote-submit, .putqa .putqa-submit {
    float: right;
}
.moco-btn-red:link, .moco-btn-red:visited {
    color: #fff;
}
.putnote .errortip-btm, .putqa .errortip-btm {
    margin-right: 16px;
    font-size: 12px;
    color: #f01414;
    line-height: 40px;
}
link, :visited, ins {

    text-decoration: none;

}
.moco-btn-red {

    border-style: solid;
    border-width: 1px;
    cursor: pointer;
    -weibkit-transition: all .3s;
    -moz-transition: all .3s;
    transition: all .3s;
    color: #fff;
    background-color: #f20d0d;
    border-color: #f20d0d;
    opacity: 1;

}
.moco-btn {

    position: relative;
    display: inline-block;
    margin-bottom: 0;
    text-align: center;
    vertical-align: middle;
    touch-action: manipulation;
    text-decoration: none;
    box-sizing: border-box;
    background-image: none;
    border-radius: 0;
    -webkit-appearance: none;
    white-space: nowrap;
    outline: none;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
    border-style: solid;
    border-width: 1px;
    cursor: pointer;
    -weibkit-transition: all .3s;
    -moz-transition: all .3s;
    transition: all .3s;
    color: #545c63;
    border-color: #9199a1;
    opacity: 1;
    padding: 7px 16px;
    font-size: 14px;
    line-height: 1.42857143;
    border-radius: 18px;

}
.r {
    float: right;
}
.c-panel .panel-list {
    padding: 24px;
}
.panel-list {
    position: relative;
    padding: 0 10px;
    background: #f8fafc;
}
.c-panel.note-panel h3, .c-panel.qa-panel h3 {
    font-size: 16px;
    color: #07111b;
    line-height: 24px;
    font-weight: 700;
    margin-bottom: 16px;
}
.panel-btn-wrap {

    padding-top: 18px;
    text-align: center;

}
.moco-btn-gray-l {
    border-style: solid;
    border-width: 1px;
    cursor: pointer;
    -weibkit-transition: all .3s;
    -moz-transition: all .3s;
    transition: all .3s;
    color: #545c63;
    background-color: rgba(84,92,99,0.1);
    border-color: rgba(84,92,99,0.1);
    opacity: 1;
    border-color: transparent;
}
.moco-btn {
    position: relative;
    display: inline-block;
    margin-bottom: 0;
    text-align: center;
    vertical-align: middle;
    touch-action: manipulation;
    text-decoration: none;
    box-sizing: border-box;
    background-image: none;
    border-radius: 0;
    -webkit-appearance: none;
    white-space: nowrap;
    outline: none;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
    border-style: solid;
    border-width: 1px;
    cursor: pointer;
    -weibkit-transition: all .3s;
    -moz-transition: all .3s;
    transition: all .3s;
    color: #545c63;
    border-color: #9199a1;
    opacity: 1;
    padding: 7px 16px;
    font-size: 14px;
    line-height: 1.42857143;
    border-radius: 18px;
}
.teach-modal-overly{
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 901;
    display: none;
}
.teach-modal-layer{
    position: relative;
    background: #fff;
    box-shadow: 0 8px 16px 0 rgba(7,17,27,0.2);
    border-radius: 12px;
    z-index: 901;
    visibility: visible;
    left: 488px;
    top: 190px;
    width: 560px;
    height: 260px;
}
.teach-modal-title{
    margin-bottom: -8px;
    padding: 24px 32px 0;
    line-height: 20px;
}
.teach-modal-title div{
    font-size: 16px;
    font-weight: bold;
    color: #1c1f21;
}
.rl-close{
    position: absolute;
    top: 17px;
    right: 20px;
    width: 17px;
    height: 17px;
    cursor: pointer;
    background: url(../images/nlogin.png) no-repeat 0 0;
    transition: transform .2s;
    -webkit-transition: transform .2s;
    -moz-transition: transform .2s;
    -o-transition: transform .2s;
    border: none;
}
.pub-editor-wrap {
    width: 100%;
    position: relative;
    padding: 8px 10px;
    border: 1px solid #b7bbbf;
    background-color: #fff;
    box-sizing: border-box;
    border-radius: 2px;
}
.pub-editor-wrap {
    line-height: 1em;
    float: left;
    width: 794px;
}
.pub-editor-wrap {
    line-height: 1em;
    float: left;
    width: 507px;
}
.pub-editor-wrap {
    min-height: 78px;
    position: relative;
    z-index: 901;
    left: 520px;
    top: 15px;
}
.wgt-ipt-wrap {
    border: 1px solid #93999f;
}
.pub-editor-wrap textarea {
    width: 100%;
    min-height: 62px;
    padding: 8px;
    color: #555;
    font-size: 14px;
    resize: none;
    line-height: 18px;
    border: none;
    font-family: "Microsoft YaHei";
}
.pub-editor-wrap textarea {
    min-height: 62px;
    padding: 8px;
    color: #555;
    font-size: 14px;
    resize: none;
    line-height: 18px;
}
.pub-comment {
    position: relative;
}
.moco-btn-lg {
    padding: 11px 32px;
    font-size: 16px;
    line-height: 24px;
    border-radius: 24px;
    border: none;
    margin-right: 491px;
    z-index: 901;
    color: #fff;
}
.moco-btn-lg:hover{
    background: #c20a0a;
}
.pub-comment .moco-btn {
    margin-top: 37px;
}